The starter circuit shown in the figure was found in an old European documentation. The circuit makes use of an SCR which is still common and the diac can be of any type.
This circuit is from a 1998 Electronics Now and can be easily assembled since it uses a common...
This circuit is from the 80's component manual itself, but can be applied to more modern...
This circuit is from the National Semiconductor's Linear Application Handbook of 1994. The same...